A survey of the NARSIM C/S middleware

This document describes the Client/Server system architecture of NARSIM - the NLR Air Traffic control Research Simulator- focussing on the socalled middleware: the infrastructure that enables all the seperate parts of the simulator to interact with each other. To show the full scope of the architecture, first a somewhat abstract architecture...

Structured parallelization of a multi-block Navier-Stokes solver targeting distributed memory platforms

SOLEQS is a sequential three-dimensional multi-block multi-zone compressible Navier-Stokes solver, produced by NLR. In this paper is described how this large-scale application code in the order of 120,000 lines can be parallelized towards different computing platforms in a structured and manageable way. This paralellization is done step-wise,...

Het gebruik van case tools bij de ontwikkeling van on-board ruimtevaartprogrammatuur

Bij het ontwikkelen van de standregelprogrammatuur voor de Italiaanse satelliet SAX is gebruik gemaakt van een aantal CASE tools. Naast een beschrijving van de standregelprogrammatuur, met als hoofdeisen een hoge mate van bedrijfszekerheid en een hoge flexibiliteit, worden de ontwikkelsituatie en de ontwikkelomgeving beschreven. Geschetst wordt...

De plaats van de wiskundige bij de ontwikkeling van digitale simulatie-systemen voor toepassingen uit de "Computational physics"

NLR mainly performs applied scientific research for use in the aerospace industry. In many cases the product has the form of an information system for the design, production and usage of aerospace vehicles. Within this context, the mathematician contributes, in cooperation with specialists from other disciplines such as aerodynamics, structures,...

A measurement system for production flight tests of new aircraft

Today there is an increasing pressure on the fast delivery of a newly manufactured aircraft and on the strict guarding of its performance figures. It is therefore essential to reduce the necessary time between completion of the new aircraft and the moment of deliverance to an airline. This means that production flight testing time must be...

COLAS program generator and program generator generator

This manual describes the use of two tools for the development of software: - the COLAS Program Generator (CPG), which generates the complete control part of programs for interactive use from a specification of the user interaction. In addition the specifications needed for the COLAS command definition and stubs for the application routines are...

Voorontwerp methodenbestandssysteem - Preliminary design method base system

The informatics policy at NLR is focussed on providing an infrastructure for the development of information systems. A new component in the infrastructure is the method base system, designed to support the management and use of algorithm implemented in programs. The preliminary design analyses the functions of the method base system and...